Stapf, Dieter

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KIT – The Research University in the Helmholtz Association www.kit.eduChemical Recycling – State of playVCI – Webinar, April 13, 2021Dieter StapfH‒BrDieter Stapf – Chemical Recycling Institute for Technical ChemistryApril 13, 20202Plastics Production and Plastics Waste Generation[ million t / a ] EU 28+2* Germany**Plastics production 61.8 19.9Plastics consumption 51.2 12.6Plastic waste 29.1 6.2- Landfill 7.2 < 0.1- Energy recovery 12.4 3.2- Recycling 9.4 (export 1.8) 2.9 (export: 0.6)*) Lindner,C. et al., Circular Economy of Plastics 2018 EU-28+2, Conversio Market & Strategy GmbH, Mainaschaff (2019)**) Lindner,C., Schmitt, J., Stoffstrombild Kunststoffe in Deutschland 2017, Conversio Market & Strategy GmbH, Mainaschaff (2018)Dieter Stapf – Chemical Recycling Institute for Technical ChemistryApril 13, 20213Recycling Processes for Mixed Plastic Waste and Key ProductsPhysical processes  Recovered polymerChemical processes New productMechanical sortingSolvent extractionSolvolysis MonomerThermochemical conversionPyrolysis Pygas / -oilGasification Syngasapplied to:  standard thermoplastics Pure polymers  Polycondensates  Mixed wastes,composite materialsDieter Stapf – Chemical Recycling Institute for Technical ChemistryApril 13, 20214Examples of Plastic Waste ProducedWEEE = Waste of Electrical and Electronic EquipmentLWP = Light Weight Packaging WasteCTIS = Compound Thermal Insulation SystemDieter Stapf – Chemical Recycling Institute for Technical ChemistryApril 13, 20216Naphtha Chemical Plant (Steamcracker + Polymer Synthesis)Pretreatment Sensor-Sorting Chem. Recycling Chemical PlantSensor based SortingPretreatmentPrimary Plastic Production:Mechanical Recycling:Combined Recycling:Chemical Plant Chem. RecyclingPretreatmentChemical Recycling:Lightweight Packaging WasteLightweight Packaging WasteLightweight Packaging WasteVirgin MaterialRegranulateVirgin MaterialVirgin MaterialRegranulateResidues that are used energeticallyExtracted metals via sorting Heavy contents / Mineral residues that are landfilledCase: Recycling of Light Weight Packaging WasteComparison of Recovery RoutesDieter Stapf – Chemical Recycling Institute for Technical ChemistryApril 13, 20217LWP Waste Recycling Routes Compared to Primary Plastics Production of HDPE  Recycling scenarioCost[€/kgInput]CED[MJ/kgInput]GWP [kgCO2e/kgInput]Overall CarbonRecycledMechanical, 42% yield -0.16 -18.1 0.2 42%Mechanical, 22% yield -0.08 -6.9 0.6 22%Chemical recycling -0.24 -15.9 0.3 59%Combined recycling, mech. 42% -0.29 -30.1 -0.2 74%Combined recycling, mech. 22% -0.25 -23.1 0.0 66%Volk,R., et al., Techno-economic Assessment and Comparison of Different Plastic Recycling Pathways - a German Case Study, accepted for publication in Journal of Industrial Ecology, 2021Dieter Stapf – Chemical Recycling Institute for Technical ChemistryConclusionsTechnical assessment of combined mechanical and chemical recyclingComparison of the production of plastics from fossil raw materials with the combined mechanical / chemical recycling of post-consumer waste, taking into account energy recoveryCosts: Economic attractiveness of both, mechanical and chemical recycling Energy: Mechanical and chemical recycling perform similar; advantageous over crude oil based productsCO2 emissions: Mechanical and chemical recycling perform similar; at high recycling rates advantegous over crude oil based products  Recycling quotas can be achieved through a combination of mechanical and chemical recyclingApril 13, 20218Dieter Stapf – Chemical Recycling Institute for Technical ChemistryApril 13, 20219Chemical Recycling – State of playTeam KIT: Institute for Industrial Production: Frank Schultmann, Christoph Stallkamp, Justus Steins, Rebecca VolkInstitute for Technical Chemistry: Hans Leibold, Niklas Netsch, Frank Richter, Dieter Stapf, Manuela Wexler, Savrina P. Yogish, Michael ZellerStudy funded by:

Chemical Recycling - state of play

https://publikationen.bibliothek.kit.edu/1000137428/127038765

Chemical Recycling - state of play

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